My house backs on to a large sports park that slopes down to the road below. The large area between the road and the playing field is wildlands. Lots of rubbish. Lots of pest plants. Some natives.
Just through my back gate are several pine trees from which I gather cones and firewood.
Natives coming through
As for native plants, are self seeded pseudopanax, Coprosma robusta and repens, renga renga (probably from nearby gardens).
Of course there are way more pest plants than natives. I pull out the small ones, if they're too big I break the tops off so they don't seed or spread seed as far.
The menu comprises bear's breeches/Acanthus mollis, German ivy ( I saw only one plant), ivy, prunus, cotoneaster, broom/Cytisus scoparius and some Norfolk Island pines.
Weedbusters has info on how to control pest pants.
Such a pity I can't use the abundant pine needles for mulch or compost in my garden. There's tradescantia and many other weeds among them and I daren't risk them taking a liking to my garden.
While I'm scrambling around, I lay branches horizontally between trees to create a bit of a shelf. Over time, this reduces soil and water running down the hill and creates a shelf for seeds to settle and grow.